Common Ground Stick like Sanwa or Seimitsu LS32-01 connected to non common ground xbox360 pad

Hi,

several people ask me how to connect non common ground xbox360 pad (original ms ones) to common ground sanwa JLF or seimitsu LS32-01 sticks. Here's a scetch for an easy strip board solution. It makes use of optocopplers. Solution is based on this blogentry of gtpunch. Thanks mate.

The IC used is 4 in 1 optocoppler chip. Chip name in the legend is order name for reichelt.de.